/**
 * Created by Administrator on 2017/4/25.
 */
$(document).ready(function () {
    var current = $('body').children()[0];
    $(document).keyup(39, function () {
        var $current = $(current);
        if ($current.is('script')) {
            return;
        }
        $current.css({backgroundColor: 'lightblue'});
        current = $current.next();
    });
});